finger pin

基本解释

When a pin pricks our finger or we touch a burning hot objects; we suddenly yell &remove that hand very fast.
当一根钉子刺到我们的手指，或我们触摸灼热的东西时，我们突然尖叫，快速移开手指。
cherrypenn.blog.163.com
Since 1989, 17 cases ( 18 fingers) of mallet finger underwent surgical repair of the extensor tendons of the fingers combined with postoperative perpendicular pin transfixion.
1989年以来，我们应用手术修复伸指肌腱加术后垂直钢针固定的方法治疗锤状指17例18指。
To make a purchase, consumers have their finger read at checkout, often on a pad incorporated into a console that also reads swipe cards and provides for personal identification number (PIN) entry.
购物时，消费者的指纹在付款处的面板上被读取，通常这种面板与可以刷卡和输入个人身份号码的控制台相连。

Activated by pulling out a grenade-like pin and palming an embedded finger pad, the Armstar BodyGuard 9XI-HD01 sparks a loud and visible arc of electricity between its wrist-mounted taser spikes, a sight that inventor David Brown hopes will encourage would-be crooks to surrender.
ENGADGET: BodyGuard stun-glove leaps out of comic books, into the arms of LA Sheriff's Department